Because the pressure compensator is affected by factors such as hydraulic power, the existing loadsensitive multiway valve has problems such as low flow control accuracy. Taking the postvalve compensation multiway valve as the research object, the principle of compensation pressure difference was used to design an electromechanical pressure difference control unit composed of a servo motor and a ball screw, which was added to the pressure compensator. Then a new type of differential pressure controllable multiway valve was built. The working principle of the new type of differential pressure controllable multiway valve was clarified. The multiway valve simulation model was established on the SimulationX platform, and the simulation analysis was carried out. The results show that torque control mode is adopted for the servo motor to control the output torque of the motor, and an additional force is applied to the compensator spool, the pressure difference of the main valve orifice can be continuously controlled within the range of 0~3.5 MPa.Furthermore, the hydraulic power can be estimated and compensated to improve the flow control accuracy. In addition, when the electromechanical pressure difference control unit is not controlled and controlled, when the servo motor’s moment of inertia is smaller and the ball screw lead is larger, the effect on the response characteristics of the compensator is smaller, and the pressure difference control dynamic response is better.